Tire-casing.



H. R. HOLBROOK.

TIRE CASING. APPLICATION FILED APR.17, 1909.

Patented Jan. 31, 1911.

INVENTUR.

ATTEIRNEY.

WITNESSES.

U TED *s'rA'rns R. HOLBRQOK, 0F, ATTLEBORO, MASSACHUSETTS.

' TIRE-CASING.

Specification of Letters Patent.

Patented J an. 31, 19111.

Application filed April 17, 1909. Serial N0.-490,569.

To all whom "it may concern:

lowing is aspecification. Mymvention. relates to metalllc casings or guards forjtlres of automobiles, bicycles,

and other vehicles.

Its essentialobjects are to prevent puncture, abrasion or other injury to the tire, to prevent slipping and. to attain these 4 ends in a structure which is simple, strong, and inexpensive to manufacture.

. A further object is to provide a novel attaching or, securing means for the marginof the casing.

. Other objects will be hereinafter disclosed in the description and .be made the subject of claims.

- a detail view of a connecting plate.

In thedrawingswhich accompany this specification and form a part thereof, Figure 1 is a plan of the blank from which a. clenching member is formed, Fig. 2, a side elevation of the same cupped up, Fig. 3 is a transverse section, partially in side elevation, of a rubber tire, its mounting parts,

and my novel casing applied thereto. Fig.

4 isa side elevation of the same. Fig. 5, Fig. (3, a bottom plan View of the plate engaged by four balls, and Fig. 7, a top plan view of the modified forni of casing applied to a tire.

Like reference characters indicate like parts throughout the views.

In the drawings 1' represents-the clencher 'wheel'rim, 3, 3 the retaining rings engaged thereby, 4 the tire seat, and 5 the tire of an ordinary wheel in conjunction with which parts my invention is herein illustrated. It

will be understood, however, thatmy casing may be applied to tires or to tire mountings otherwise constructed:

My casing consists of a metallic network or mesh comprising interengaging clenching Its detailed construction is as follows. From a sheet of steel or similar metal is cut a plurality of quadrilateral or lozenge shaped blanks or planchet-s 7 provided with lateral recesses 8 n each side, forming. at. the corners of the blank four radially disposed ointed arms 9 as shown: in Fig.-.1. 'Eac blank 7 is next *cuppejd up with the arms 9 extending vertically from the rounded body portion, as shown in Fig. 2, whereby areformed by 'VlIlLllG of the recessed portions circumferential openings at opposite points in the same horizontal plane inthe cup wall.

' 19 are steel plates, each ofwhich is sub.

stantially octagonal in. outline and provided with four oblong marginal slots 20 parallel with alternate edges of the blank. Through each slot 20 passes one of the arms 9 of each 1 of four clenching members. The arms 9 are then bent inwardly with their pointed ends converging and in contact with each other over the portions of the plate between the slots and the marginal edges, it being noted that said portions are loose in the openings 8, thus forming a substantially spherical clenching member, as shown 1n Fig. 6. The

portion of the ball atand adjacent the points of convergence of the arms is slightly flattened. Each plate 19 engages four of the clenching members, as shown in Fig. (i, and in respect to their longitudinal rows the clenchlng members are in staggered relation to each other thus minimizing any tendency of the guard to slip in any direction upon the road surface. The members 7 gradually decrease in diameter from the tread or central portion of the casing to its margins, thus distributing the metal most advantageously for wear. The plates 19 also gradually decrcase in diameter from the tread to the marginal portions. The decreasing dimensions ofthe plates results in'making the casing prefectly conform transversely as well as longitudinally to the contour of the inclosed tire. The diminishing size of the clenching members also facilitates the use of the smaller plates. Attaching hooks 12 are connected with the marginal plates 19.

Fig. 7- shows a modified form of casing, part of the plates and clenching members being somewhat different, but to which no claim is made herein;

Vhat I claim is,

1. A tire casing comprising a plurality of interengaging clenching members and connecting members, the connecting members.

comprising plates provided with marginal slots and the clenching members being substantiallyspherical in form and provided with foldable portions adapted to pass through said slots and engage the plates, said foldableportions being diametrically dis osed in pairs and foldable with their enc s abutting.

provided with marginal slots substantially equidistant from eachother and disposed 15 upon diametrically opposite sides of the plates, and each clenching member having bendable portions adapted to pass through said slots. V

"In testimony. whereof I have aflixed my 20 signature in presence of two witnesses.

HARRY R. HOLBROOK. Witnesses LEONARD W. HORTON, HORATIO E. BELLOWS. 

